all_years

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

## 
## Attaching package: 'data.table'

## The following objects are masked from 'package:dplyr':
## 
##     between, last

## Loading required package: xts

## Loading required package: zoo

## 
## Attaching package: 'zoo'

## The following objects are masked from 'package:base':
## 
##     as.Date, as.Date.numeric

## 
## Attaching package: 'xts'

## The following object is masked from 'package:data.table':
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##     last

## The following objects are masked from 'package:dplyr':
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##     first, last

## Loading required package: TTR

## Version 0.4-0 included new data defaults. See ?getSymbols.

## 
## Attaching package: 'lubridate'

## The following objects are masked from 'package:data.table':
## 
##     hour, mday, month, quarter, wday, week, yday, year

## Warning: Too few values at 454677 locations: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
## 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ...